Years of Service of the Two Groups of Vocational Agriculture Teachers As Randomly Divided

200 TABLE 34. —Years of service of the two groups of vocational agriculture teachers as randomly divided Years of Group Number Garvice Odd 26 2.92 Even 27 3.00 Total 53 Mean 2.96 APPENDIX P VOCATIONAL AGRICULTURE TEACHERS — YEARS OP SERVICE 199 19B 110 Plug holes in metal with an ate welder. 111 Cut cast iron with an oxy-acetylene torch. 112 Bend or shape sheet metal with pliers, seaoers or with a vise and hammer. 113 Correct an air or water logged water supply tank. 114 Remove obstructions from traps and drain lines. 115 Plan a high school agricultural mechanics shop. 116 Plan for disposal of scrap and waste materials. 117 Select and use levels. 118 Select and use a planer. 119 Select and use glue and other adhesives to join wood. 120 Apply plywood or other building boards. c 197 085 Develop an Inventory procedure for control of tools, equipment, supplies and materials. 086 Make a free-hand sketch utilizing the three principal views. 087 Select and use precision measuring tools such as micrometers. 088 Select and use a portable electric drill. 089 Clean and preserve tools. 090 Select the best method of fastening or Joining wooden members. 091 Lay out and cut rafters. 092 Select and use bolt cutters. 093 Select and use thread chasers. 094 Select and uBe and electric soldering gun. 095 Solder copper. 096 Ueld horizontally with metal in a vertical plane. 097 Oxy-acetylene fusion weld with filler rod. 098 Select and UBe plumbing tools. 099 Install soft copper pipe. 100 Install flexible plastic pipe. 101 Select and apply wood preservatives. 102 Identify procedures that might insure safety in the handling of materials. 103 Select and use layout tools for wood. 104 Place and finish concrete. 105 Select lumber by classification and grade. 106 Select and use common wood and lag screws to fasten wood. 107 Layout a foundation. 108 Bend, twist or shape cold metal. 109 Describe metal temperatures and characteristics by heat colors. 196 061 Make multiple pass welds. 062 Cut or pierce steel with a cutting torch. 063 Identify safety practices In the handling of welding gas cyllndera. 064 Obtain project plans and select projects for students. 065 Select and use a portable circular saw. 066 Specify and order standard steel shapes by name and dimension. 067 Select solder and flux for a given application. 068 Weld steel castings. 069 Bronze weld cast Iron. 070 List the safety precautions in the use of hand tools. 071 Describe how to prevent and how to extinguish fires. 072 Plan storage of tools, equipment, supplies and materials. 073 Select and utilize agricultural mechanics training aids and audio-visual materials. 074 Order materials using common units and designations. 075 Select and use bits and hand drills. 076 Replace handles in tools. 077 Select and use various kinds of nails. 078 Select and apply roofing materials. 079 Select and use metal files. 080 Explain the meaning of arc welder name plate information. 081 Weld vertically with the metal in a vertical plane. 082 Explain the principles of fusion and adhesion welding. 083 Oxy-acetylene fusion weld without filler rod. 084 Maintain and repair valves and faucets. 195 039 Discuss the safe transportation of tractors and equipment on the highway by driving and by trucking. 040 Determine whether a charging system fault lies with‘the . generator (alternator) or the regulator. 041 Define indicated, friction, flywheel, brake, belt, drawbar, PTO and rated horsepower. 042 Identify engine types by classification of fuel used, valve . arrangement, cylinder arrangement, method of cooling and displacement. 043 Use* and interpret the readings of a radiator and radiator cap tester. 044 Remove and replace a distributor. 045 Obtain and interpret Nebraska Tractor Test Summaries. 046 List safety practices to be observed in the use of power tools in the shop. 047 Sharpen twist drills. 048 Control welding distortion, warping and cracking. 049 Describe the safe dress for shop work. 050 Identify first-aid procedures to use in case of an accident. 051 Calculate board feet. 052 Select the correct welding electrode for a given application. 053 Identify weld quality in terms of the four welding fundamentals. 054 Weld cast iron. 055 Select, use, clean and store paint brushes. 056 Maintain school shop discipline. 057 Select and use a radial arm saw. 058 Select and use a bench or pedestal grinder. 059 Dress and true a grinding wheel. 060 Select arc welding equipment, tools and supplies. 194 020 Change diesel fuel filters* 021 Determine an optimum Implement width and tractor size and type given factors of acreage, crops, tillage practices, timeliness, etc. 022 Explain the importance and function of the various types of engine air cleaners. 023 List and explain the functions of the various engine lubri cating system components. 024 List and describe the functions of the various engine liquid cooling system components. 025 Set engine high idle rpm by adjusting the governor and/or the governor linkage on a specified engine. 026 Select a battery by type and capacity rating for a given application. 027 Adjust tractor engine clutch free travel. 028 List and explain the basic principles of hydraulics. 029 Describe the operation and purpose of a supercharger and a turbocharger 030 Service a liquid cooling system in preparation for cold weather operation. 031 Describe the effects of low temperature on battery capacity and engine cranking power requirements. 032 Define and explain how to minimize side draft. 033 Discuss the safe operation of agricultural and industrial tractors and equipment. 034 Change the oil and oil filter of an engine. 035 Remove and install a storage battery. 036 Explain the effect of engine speed and load on optimum spark timing requirements. 037 Define the center of pull and the center of draft. 038 List the various types and explain the operation of hydraulic pumps, valves, cylinders, motors, etc. 193 Selected Agricultural Mechanics Competencies (E Hat) 001 Remove end replace points and condenser* 002 List and explain the four strokes of a four-stroke cycle engine. 003 List the possible causes of excess engine oil consumption and explain how to determine each. 004 List and describe the functions of the various components of the gasoline fuel system. 005 List and explain the functions'of the various ignition system components. 006 Determine the cause and correct the failure of an engine to crank and/or start. 007 List and explain the two strokes of a two-stroke cycle engine. 008 Identify engine parts by name and function. 009 List the precautions in operating a tractor equipped with a turbocharger. 010 Set valve clearance. 011 List and explain the meaning of A.P.I. oil service class ifications. 012 Calculate transmission input to output shaft ratios given the necessary factors. 013 Calculate displacement and compression ratio given the necessary factors. 014 Explain the importance of keeping diesel fuel clean. 015 List and describe the functions of various starting system components. 016 Use and interpret the readings of a coil and condenser tester. 017 Determine tractor operating costs of depreciation, interest, taxes, housing, insurance, fuel, lubricants, miantenance and repair. 018 Explain the meaning of a multi-viscosity oil. 019 List the major causes of engine overheating and explain how each might be corrected. 192 114 Select the kind end size of pipe to use for e given application. 115 Identify causes of paint failure. 116 Develop a list of desirable tools for various type shops. 117 Select and use hammers and sledges. 118 Select and use a high pressure washer. 119 Construct forms for concrete. 120 Construct vail framing. 191 0B9 Sharpen and reshape punches and chisels. 090 Estimate the number and type of concrete blocks needed. 091 Identify building construction members by name. 092 Select and Install hinges, pulls and other miscellaneous build- lng hardware. 093 Select and use punches and cold chisels. 094 Remove frosen nuts and bolts that have broken off. 095 Solder galvanised metal. 096 Select, Install and maintain an arc welder. 097 Hard surface materials using an arc welder. 098 Select and use self-tapping screws to join sheet metal. 099 Identify and select pipe fittings. 100 Install rigid plastic pipe. 101 Select the type of paint for a given application. 102 Select and apply paint to metal surfaces. 103 Select and use vises and clamps. 104 Estimate the quantity of concrete and materials needed. 105 Cure concrete 106 Describe the characteristics and grades of plywood. 107 Select and use bolts to fasten wood. 108 Build roof trusses. 109 Select and use standard threaded fasteners. 110 Explain how an arc welder operates. 111 Veld sheet metal with an arc welder. 112 Cut sheet metal by hand with tin snips, bench shears or chisels. 113 Use rivets and riveting tools to Join sheet metal. 190 065 Select and use squares. 066 Identify metals by a spark or other type test. 067 Select and use twist drills. 068 Solder using a propane torch. 069 Select a proper welding tip size and operating pressures for a given application. 070 Prepare paint for use by mixing, thinning and straining. 071 List the safety rules and practices that might prevent fa11b . 072 Select and use a power hack saw. 073 Select, specify and order tools, equipment, supplies and materials. 074 Read and Interpret a drawing or plan. 075 Identify common hand tools by name. 076 Select and use a table saw. 077 Reinforce concrete. 078 Square a board. 079 Select and use hand hack saws. 080 Select and use taps and dies. 081 Strike and run beads with a D.C. welder. 082 Cut and pierce metal with an arc welder.

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